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Rapid undisturbed standby power supply relay control method

A backup power supply and control method technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as serious damage to machinery that cannot reverse the production process, prevent failures from expanding, and reduce enterprise operation and maintenance. cost, to achieve the effect of energy saving and consumption reduction

Pending Publication Date: 2021-05-14
NINGBO IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of examples show that after the backup power supply is automatically switched on, it is still unable to reverse the situation that the production process has been severely damaged and some machinery has been damaged, so that many companies today cancel or explicitly prohibit the use of backup power supply.

Method used

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  • Rapid undisturbed standby power supply relay control method
  • Rapid undisturbed standby power supply relay control method
  • Rapid undisturbed standby power supply relay control method

Examples

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Embodiment Construction

[0026] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0027] Embodiments of the present invention relate to a fast and undisturbed backup power supply replacement control method, comprising the following steps:

[0028] Use the load-side power-off analog quantity to quickly start and block the comprehensive criterion to judge whether the power supply system is in a power-off condition. This method can quickly identify the power failure condition of the power supply system, f...

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Abstract

The invention relates to a rapid undisturbed standby power supply relay control method, which comprises the following steps of: judging whether a power supply system is in a power-loss working condition or not by using a load side power-loss analog quantity rapid starting and locking comprehensive criterion; and when the power supply system has a power-loss working condition, putting a standby power supply into use by adopting different switching criteria according to load components. Continuous power supply of the power supply system can be effectively met, and stable operation of production equipment is ensured.

Description

technical field [0001] The invention relates to the technical field of safety automation of power distribution systems, in particular to a fast and undisturbed backup power supply continuous control method. Background technique [0002] The power supply mode of iron and steel enterprises usually adopts the dual power supply segmental power supply mode, such as figure 1 As shown, based on the requirements of the operation mode of the power system, it is generally not allowed to connect (closed) the power source 1 and the power source 2, and the relationship between the two segments is mutual backup. The traditional backup power automatic switch-on device (referred to as standby automatic switch) implements switching according to the following three conditions. Take the dark standby with 3DL normally disconnected as an example: [0003] ①The power supply 1 fails and jumps off 1DL, and the line has no current; [0004] ②The voltage of power supply 2 is normal, that is, there ...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/0073
Inventor 吴成李慧韩彬钱惠明同彪刘璟庞贤杰
Owner NINGBO IRON & STEEL